How to popup a message in Siebel

You can use COMCreateObject("WScript.Shell") for displaying the custom message or for debugging the issues in eScript. This can be used in server script and in older versions of Siebel (which supports vb script).

Below is the example:

//Instantiate
var msg = COMCreateObject("WScript.Shell");

//Display message
msg.popup("Custom text" + variable ,0,"Message title");

//Example: of text and variable concatenation
msg.popup("Doc Num:"+docNum +" Owner Id:"+OwnerId+" P Id:"+POAsrId,0,"Debus Script");

You can use TheApplication().RaiseErrorText("Text"+ variable); but Siebel will consider this as error and will not execute any code after this.